[LCI] Implement Hidden Courtyard

Mage/src/main/java/mage/abilities/effects/keyword/DiscoverEffect.java

@@ -0,0 +1,78 @@
+package mage.abilities.effects.keyword;
+
+import mage.abilities.Ability;
+import mage.abilities.effects.OneShotEffect;
+import mage.cards.Card;
+import mage.cards.Cards;
+import mage.cards.CardsImpl;
+import mage.constants.ComparisonType;
+import mage.constants.Outcome;
+import mage.constants.Zone;
+import mage.filter.FilterCard;
+import mage.filter.common.FilterNonlandCard;
+import mage.filter.predicate.mageobject.ManaValuePredicate;
+import mage.game.Game;
+import mage.players.Player;
+import mage.util.CardUtil;
+
+/**
+ * @author TheElk801
+ */
+public class DiscoverEffect extends OneShotEffect {
+
+    private final int amount;
+    private final FilterCard filter;
+
+    public DiscoverEffect(int amount) {
+        super(Outcome.Benefit);
+        this.amount = amount;
+        this.filter = new FilterNonlandCard();
+        filter.add(new ManaValuePredicate(ComparisonType.FEWER_THAN, amount + 1));
+        staticText = "Discover " + amount + " <i>(Exile cards from the top of your library " +
+                "until you exile a nonland card with mana value " + amount + " or less. " +
+                "Cast it without paying its mana cost or put it into your hand. " +
+                "Put the rest on the bottom in a random order.)</i>";
+    }
+
+    private DiscoverEffect(final DiscoverEffect effect) {
+        super(effect);
+        this.amount = effect.amount;
+        this.filter = effect.filter.copy();
+    }
+
+    @Override
+    public DiscoverEffect copy() {
+        return new DiscoverEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        if (player == null) {
+            return false;
+        }
+        Cards cards = new CardsImpl();
+        Card card = getCard(player, cards, game, source);
+        if (card != null) {
+            CardUtil.castSpellWithAttributesForFree(player, source, game, card, filter);
+            if (game.getState().getZone(card.getId()) == Zone.EXILED) {
+                player.moveCards(card, Zone.HAND, source, game);
+            }
+        }
+        cards.retainZone(Zone.EXILED, game);
+        player.putCardsOnBottomOfLibrary(cards, game, source, false);
+        return true;
+    }
+
+    private Card getCard(Player player, Cards cards, Game game, Ability source) {
+        for (Card card : player.getLibrary().getCards(game)) {
+            cards.add(card);
+            player.moveCards(card, Zone.EXILED, source, game);
+            game.getState().processAction(game);
+            if (filter.match(card, game)) {
+                return card;
+            }
+        }
+        return null;
+    }
+}

Mage/src/main/java/mage/constants/SubType.java

@@ -25,6 +25,7 @@ public enum SubType {
     MOUNTAIN("Mountain", SubTypeSet.BasicLandType),
     PLAINS("Plains", SubTypeSet.BasicLandType),
     SWAMP("Swamp", SubTypeSet.BasicLandType),
+    CAVE("Cave", SubTypeSet.NonBasicLandType),
     DESERT("Desert", SubTypeSet.NonBasicLandType),
     GATE("Gate", SubTypeSet.NonBasicLandType),
     LAIR("Lair", SubTypeSet.NonBasicLandType),